in effect the requirement to file these activity reports leads to banks simply requesting a lot of data from clients (contracts, trading data, invoices), and if you can't convince them, they'll eventually close your account. so you go to a different bank. their compliance department eventually also starts asking questions, and so on.

the freezing of accounts related to the "Freedom Convoy" is quite different, as it was an exercise of emergency powers. the Trudeau admin could have ordered gas stations to not sell fuel to them, or Visa/MasterCard to not process certain cards, or anything similarly extraordinary.